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High-elasticity copper alloy easy to turn and preparation method thereof

A high-elasticity, copper alloy technology, applied in the direction of manufacturing tools, heat treatment equipment, furnace types, etc., can solve the problems of environmental hazards and high preparation costs

Inactive Publication Date: 2021-08-13
沈阳慧坤新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, beryllium bronze has two great disadvantages. One is that the smelting of beryllium will produce compounds such as beryllium oxide during the melting and casting process of beryllium bronze. These compounds will cause serious harm to the environment and human body as harmful substances.
In addition, C17300 contains 1% lead, which seriously exceeds the limit of harmful substances stipulated by EU RoHs
Second, the mining and smelting of beryllium and the preparation of master alloys of beryllium are very expensive

Method used

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  • High-elasticity copper alloy easy to turn and preparation method thereof
  • High-elasticity copper alloy easy to turn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Billet Billet, finished product specification Straight stick, hard state.

[0027] S1, melting and casting process:

[0028] Take 8 parts of nickel, 5 parts of tin, 0.35 parts of tellurium, 0.2 parts of zinc, 0.1 part of iron, 0.05 parts of phosphorus and 86.3 parts of copper. After adding 86.3 parts of copper into the melting furnace, raise the temperature in the melting furnace to 1100°C; add 8 parts of nickel, 5 parts of tin, 0.35 parts of tellurium, 0.2 parts of zinc, 0.1 parts of iron, and 0.05 parts of phosphorus into the melting furnace in sequence, Raise the temperature in the melting furnace to 1200°C; let it stand for 20 minutes; divert the melted melt into the holding furnace, and control the temperature of the holding furnace at 1150°C; solidify the melt of the crystallizer into a diameter The billet is drawn out from the continuous casting machine, the length is 3000mm, and it is interrupted by the sawing machine.

[0029] S2, cold drawing deformatio...

Embodiment 2

[0034] Billet Billet, finished product specification Straight stick, hard state.

[0035] S1, melting and casting process:

[0036] Take 9 parts of nickel, 6 parts of tin, 0.45 parts of tellurium, 0.25 parts of zinc, 0.15 parts of iron, 0.05 parts of phosphorus, and 84.1 parts of copper. After adding 84.1 parts of copper into the melting furnace, raise the temperature in the melting furnace to 1100°C; add 9 parts of nickel, 6 parts of tin, 0.45 parts of tellurium, 0.25 parts of zinc, 0.15 parts of iron, and 0.05 parts of phosphorus into the melting furnace in sequence, Raise the temperature in the melting furnace to 1200°C; let it stand for 20 minutes; divert the melted melt into the holding furnace, and control the temperature of the holding furnace at 1150°C; solidify the melt of the crystallizer into a diameter The billet is drawn out from the continuous casting machine, the length is 3000mm, and it is interrupted by the sawing machine.

[0037] S2, cold drawing deform...

Embodiment 3

[0042] Billet Billet, finished product specification Straight stick, hard state.

[0043] S1, melting and casting process:

[0044] Take 10 parts of nickel, 7 parts of tin, 0.5 parts of tellurium, 0.3 parts of zinc, 0.2 parts of iron, 0.05 parts of phosphorus, and 81.95 parts of copper. After adding 81.95 parts of copper into the melting furnace, raise the temperature in the melting furnace to 1100°C; add 10 parts of nickel, 7 parts of tin, 0.5 parts of tellurium, 0.3 parts of zinc, 0.2 parts of iron, and 0.05 parts of phosphorus into the melting furnace in sequence, Raise the temperature in the melting furnace to 1200°C; let it stand for 20 minutes; divert the melted melt into the holding furnace, and control the temperature of the holding furnace at 1150°C; solidify the melt of the crystallizer into a diameter The billet is drawn out from the continuous casting machine, the length is 3000mm, and it is interrupted by the sawing machine.

[0045] S2, cold drawing deform...

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Abstract

The invention provides a high-elasticity copper alloy easy to turn and a preparation method thereof, and relates to the technical field of copper alloys. The high-elasticity copper alloy easy to turn is characterized by being prepared from the following raw materials in parts by weight: 8 to 10 parts of nickel, 5 to 7 parts of tin, 0.3 to 0.6 part of tellurium, 0.1 to 0.3 part of zinc, 0.05 to 0.2 part of iron, 0.01 to 0.05 part of phosphorus and 82 to 86.5 parts of copper. The preparation method of the high-elasticity copper alloy easy to turn comprises the steps of S1, casting, S2, cold drawing deformation and S3, heat treatment. A continuous casting process is adopted, and the preparation method is short in process and low in cost. The alloy has excellent mechanical properties, the tensile strength can reach 1100 MPa or above, the yield strength can reach 1000 MPa or above, the elastic modulus is larger than 130 GPa, and the stress relaxation resistance is superior to that of beryllium bronze. The alloy can be machined by a lathe and is used for manufacturing high-power connectors with strict requirements and high safety, such as aerospace, rail transit and new energy automobile connectors.

Description

technical field [0001] The invention relates to the technical field of copper alloys, in particular to an easy-to-turn high-elasticity copper alloy and a preparation method thereof. Background technique [0002] At present, in the world, only the US brand C17300 leaded beryllium bronze is easy to turn high elastic copper alloy, its tensile strength is greater than 1000MPa, and elastic modulus is greater than 120GPa. C17300 is an easy-to-turn high-elastic copper alloy with harsh environmental requirements and can only be used in connectors for aerospace, rail transit and new energy vehicles with strict requirements. Moreover, beryllium bronze has two major disadvantages. One is that during the smelting and casting process of beryllium bronze, compounds such as beryllium oxide will be produced. These compounds, as harmful substances, will cause serious harm to the environment and human body. In addition, C17300 contains 1% lead, which seriously exceeds the limit of harmful su...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/02C22F1/02C22F1/08C21D9/00B22D11/00B21C1/16
CPCB21C1/16B22D11/004C21D9/0075C22C1/02C22C9/06C22F1/02C22F1/08
Inventor 李胤杰薄熙涛
Owner 沈阳慧坤新材料科技有限公司